JP2000176855A - Securing tool driving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanism to prevent dropping of a nail without pressurizing force of a pusher provided in a slender magazine to store a connecting nail. SOLUTION: This securing tool driving machine has a slender magazine 3 to store a connecting nail to connect a nail (securing tool) by a connecting belt and a pusher provided in the magazine to pressurize a head nail 1B out of the connecting nails stored in the magazine from a rear end of the connecting nail in such a way as to feed it to a nose driving chamber 11. A contact member 18 to make contact with a nail shaft part is provided on a side surface of the magazine 3 so as to constantly pressurize at least the head nail 1B to the side of the nose driving chamber 11, and the contact member 18 prevents dropping of the head nail 1B in the nose head end direction by pressurizing it to an inner wall of the nose driving chamber 11 in a state without pressurizing force of the pusher.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elongated magazine for accommodating connecting fasteners in which fasteners such as nails are connected by a connecting band, and a nose for a leading fastener among the connecting fasteners accommodated in the magazine. With a pusher provided in the magazine to press from the rear end of the connecting fastener so as to send it to the driving chamber of the fastener, especially to prevent idle hitting when the fastener is lost Therefore, the present invention relates to a fastener driving machine having a fastener falling prevention mechanism, which is suitable for use in a fastener driving machine having an idle driving prevention mechanism for stopping the driving operation while leaving a small number of fasteners. .

[0002]

2. Description of the Related Art FIG. 1 shows an elongated magazine 3 for accommodating connecting nails in which nails 1 are connected by a connecting band 2 made of a resin material such as thin polypropylene or the like. A nailing machine 7 having a pusher 6 provided in the magazine to press from the rear end of the connecting nail so as to feed it into the driving chamber is shown. In such a nail driving machine 7, if the nail is run without any nails, the blade 9 reciprocates in the nose 5 in an impact, and it is not preferable because the bumper is damaged or the nail driving machine is shocked. In order to prevent such an empty driving, generally, in the nailing machine shown in FIG.
It is common to provide an anti-punching mechanism that prevents nailing operation while leaving a small number of nails of up to about four. In the case of such an idle hit prevention mechanism, if the pusher is retracted when a new connecting nail is loaded, the leading one of the remaining few connecting nails may fall into the nose driving chamber. If the driving operation is restarted in the state of dropping, there is a possibility that the nail is jammed in the nose, that is, a jam occurs. Hereinafter, description will be made with reference to FIGS.

In FIG. 2, the remaining five nails 1 are connected to a connecting band 2.
The pusher 6 presses the rear end of the connection nail connected to the nose 5 in the direction of the arrow 10, and one nail 1 </ b> A is sent into the driving chamber 11 of the nose 5. When the nailing machine is operated in this state, as shown in FIG. 3, the blade 9 descends rapidly, hits the nail 1 </ b> A in the driving chamber and drives it into an object such as a pillar. At the time of this driving, the connecting band 2 connecting the nail 1A and another nail is broken by the impact of the blade 9 at the connecting portion between the nail 1A and the next nail 1B.
The impact force of the blade 9 is also transmitted to the nail 1B via the connecting band 2. When the connecting band 2 is formed of a material that is slightly fragile, such as a thin polypropylene (pp) resin material or paper, the downward force applied to the nail 1B causes the next nail 1C to move.
May be broken.

In FIG. 4, after the nail 1A has been driven, the blade 9 returns to the rest position, and the number of nails in the magazine reaches a predetermined remaining number (four in the example shown), and the blank is hit. The prevention mechanism has been activated, and the loading of a new connecting nail has been promoted. In addition, the pusher 6 is used to load the connecting nail.
Are retracted in the direction of arrow 14. When the pusher 6 is pulled in the direction of arrow 14 to load a new connecting nail, the pressing force toward the nose driving chamber side of the remaining nails including the leading nail 1B and the next nail 1C is eliminated. As described above, if the pressing force is lost in a state where the connecting portion 13 between the leading nail 1B and the next nail 1C is broken, the leading nail 1B falls under its own weight because it is not connected to other connecting nails. .

FIG. 5 shows a state in which the pusher 6 again presses the connecting nail in the direction of arrow 10 with the leading nail 1B dropped as shown in FIG. Magazine 3 for convenience of illustration
Does not show the new connecting nail loaded in
It should be understood that a connecting nail connecting a large number of nails is in the magazine 3 and the rear end thereof is pressed by the pusher 6. When the pusher 6 pushes the connecting nail in the direction of arrow 10 with the leading nail 1B dropped, the pushing force of the pusher 6 is applied to the next nail 1C, and a part of the head 17 of the nail 1C is driven by the nose 5. You will enter the room. In this state, when the nail driving machine is operated to lower the blade 9, as shown in FIG.
The blade 9 drives the nail 1C and the nail 1B in the driving chamber together, resulting in a double hit of the nail, which causes a jam in the nose 5, that is, a jam.

[0006]

SUMMARY OF THE INVENTION As described above, an object of the present invention is to provide an elongated magazine for accommodating connecting fasteners in which fasteners such as nails are connected by a connecting band, and a connecting fastener for accommodating the magazine. Among them, there is a possibility that a fastener driving machine such as a nail driving machine having a pusher provided in a magazine so as to press the leading fastener from the rear end of the connecting fastener so as to send it to the nose driving chamber. An object of the present invention is to provide a mechanism for preventing a fixing tool such as a nail from dropping in a fixing tool driving machine such as a nail driving machine as shown in FIG.

[0007]

According to the present invention, there is provided an elongated magazine for accommodating a connecting fastener which is obtained by connecting fasteners such as nails with a connecting band.
And a pusher provided in the magazine so as to press the leading fastener from the rear end of the fastener so as to send the leading fastener to the nose driving chamber. A contact member that is in contact with the fixing shaft so as to constantly press at least the first fixing tool toward the nose driving chamber side, and is provided on a side surface of the magazine, and the corresponding contact member is the pusher. Independently of the pressing force, the at least the leading fastener is pressed against the wall surface of the nose driving chamber to prevent falling in the direction of the nose tip, thereby providing a fastener driving machine, Eliminates the possibility of jamming if the pusher is pulled back in the magazine to load a new connecting fastener.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 6 and 7, a mechanism for preventing a fixing tool such as a nail from dropping according to the present invention will be described. In these drawings, the same members as those in FIGS. 2 to 5 are denoted by the same reference numerals, and description thereof will be omitted. Also, in the embodiment of FIGS. 6 and 7, it is assumed that the nailing machine is in an idle driving prevention state in a state where there are four fasteners, that is, nails.

In the present invention, at least the leading nail 1B
The contact member 18 which contacts the shaft of the nail 1 connected so as to always press the nose 5 toward the driving chamber 11 of the nose 5
It is provided on the side of. The contact member 18 is a magazine 3
Is mounted so as to pivot around the pin 19. The pin 19 is supported by a pair of pin support portions 21 formed on the nose side surface. The pin 19 extends in a direction orthogonal to the longitudinal direction of the magazine 3, and supports the contact member 18 so as to be rotatable around the pin. The contact member 18 is spring-biased by a coil spring, an elastic material (not shown for convenience), or the like in a direction indicated by an arrow 22 in FIG.

As shown in FIG. 7, the contact member 18 is formed in a substantially L-shape in cross section. The support member 23 for the pin 19 and the opening 25 formed in the side surface of the magazine 3 are And a fixing tool abutting portion 26 that enters the inside of the inside. The fixing tool abutting portion 26 is spring-biased in the direction of the arrow 22, and presses the shaft of the fixing tool (that is, the nail in this embodiment) from the side of the magazine. This fixing tool contact portion 2
6 includes a nail 1 on the rear end side (in the example shown, 4 to 4
Press the shaft of the second nail) to connect the connecting nail to the nose driving chamber 1.
A slope 27 for applying a pressing force is formed on the first side. Further, the nose driving chamber 11 is attached to the fixing tool contact portion 26.
On the side opposite to the side, the second slope 29 through which the nails 1 connected by the connecting band 2 pass through the contact member 18 smoothly and freely.
Are formed. Therefore, when each nail passes, the fastener contact portion 26 is turned to the side opposite to the arrow 22 in FIG. 7 to allow the fastener pressed by the pusher to move freely to the nose driving chamber side. enable.

In this embodiment, the contact member 18
Is provided on the side of the magazine so as to press the shaft of the fourth nail from the first nail 1B among the connecting nails, but this operates when the operation of the idle driving prevention mechanism is the remaining four. Depends on you. Therefore, the shaft of the leading nail may be pressed or the third nail may be brought into contact with the leading nail depending on the number of remaining nails during the operation of the idling prevention mechanism. Further, the connection of the nails is not limited to the illustrated resin band, and any connection can be used. Further, fixing devices other than nails, for example, screws or other fixing devices may be used.

After the idling prevention mechanism is actuated, as shown in FIG. 6, even if the pusher 6 is pulled in the direction of arrow 14 to eliminate the pressing force on the connecting nail, the nail 1 of the rear end has the above configuration. The slope 27 of the fastener contact portion 26 of the contact member 18 comes into contact, and a force indicated by an arrow 31 in FIG. 7 acts to press the leading nail 1 </ b> B against the inner wall of the driving chamber 11 of the nose 5. By this pressing, the leading nail 1B frictionally engages with the inner wall of the driving chamber 11, and even if the connecting band portion 13 between the leading nail 1B and the next nail 1C is broken, the leading nail 1B remains in the nose. Will not fall.
Therefore, double hitting as shown in FIG. 5 can be avoided.

[0013]

According to the present invention, the contact member presses the leading fixing tool against the inner wall of the nose driving chamber independently of the pressing force of the pusher to prevent it from falling in the direction of the nose tip. Thus, jamming does not occur even if the pusher is pulled back in the magazine to load a new connecting fastener.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a nailing machine as a fastener driving machine to which the present invention is applied.

FIG. 2 is a view showing a magazine and a nose portion of a conventional nailing machine, in which a blade is in a stationary state.

FIG. 3 is a view showing a magazine and a nose portion of a conventional nailing machine, in which a blade is being driven.

FIG. 4 is a view showing a magazine and a nose portion of a conventional nailing machine, in which a blade is stationary and a pusher is retracting.

FIG. 5 is a diagram showing a magazine and a nose portion of a conventional nailing machine, and shows a state where a blade is in a double driving state.

FIG. 6 is a view showing a magazine and a nose portion of the nailing machine having the fixing device falling prevention mechanism according to the present invention, in which a blade is in a stationary state.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C Nail (fixing tool) 2 Connecting band 3 Magazine 5 Nose 6 Pusher 7 Nail driving machine (fixing tool driving machine) 9 Blade 11 Driving room 13 Connecting portion of connecting band 17 Nail head 18 Contact member 19 Pin 21 Pin support portion 23 Contact member support portion 25 Magazine opening 26 Fixture contact portion 27 Slope 29 Slope

Claims (3)

[Claims] 1. An elongated magazine for accommodating connecting fasteners in which fasteners such as nails are connected by a connecting band, and a leading fastener among the connecting fasteners accommodated in the magazine is sent to a nose driving chamber. And a pusher provided in the magazine so as to press from the rear end of the connecting fastener, wherein at least the leading fastener is constantly pressed toward the nose driving chamber side. A contact member contacting the portion is provided on the side surface of the magazine, and the contact member presses the at least the first fixing tool toward the nose driving chamber wall separately from the pressing force of the pusher toward the nose tip direction. A fastener driving machine characterized by preventing falling of a fastener. 2. The fastener driving machine according to claim 1, wherein the contact member is attached to a side surface of the magazine so as to rotate around a pin, and the contact member is attached to a side surface of the magazine. A fixing tool abutting portion that is spring-biased so as to enter the inside of the magazine from the formed opening; and the fixing tool abutting portion presses a shaft portion of the fixing tool from a side surface of the magazine. A sloping surface for applying a force for pressing the fixing tool toward the nose driving chamber side. 3. The fastener driving machine according to claim 2, wherein the surface of the fastener abutting portion opposite to the nose driving chamber side is pressed by the pusher. A fastener driving machine characterized in that the fastener driving machine is formed as a slope which allows free movement to a storage room side.